Roller for drawing mechanism for fibrous material



R. COTTAM ET AL ROLLER FOR DRAWING MECHANISM FOR FIBROUS MATERIAL Original Filed Jan. 26, 1925 Faten ed Flori. 135, i923.

v rr cs 1 .1 1 tsitdtfll Sl-ltllhh PATENT ROBERT COTTAM, OF OLDHILIVI, THOMAS SEFTON, OF SHAW, AND JAMES EDW'ARD l LEES, OE OLDHAM, ENGLAND.

ROLLER FOR DRAWING MECHANISM FOR FIBRO'US MATERIAL.

Original application filed January 28, 1823, Serial No. 615,177. Divided and this application filed July 5, 1923. Serial No. 649,749.

To all whom it may concern:

Be it known that we, 'Ronnnr COTTAM, norms SnrroN, and Janus EDWARD Lens, subjects of the King of the United Kingdom ol- Great Britain and. lrcland, and residents of Worcester Street, Oldham', in the county of Lancaster, England; 10 Oak Street, Shaw, in the county of Lancaster England; and 41 Queens Road, Oldham, in the county of Lancaster, England respectively', have invented new and useful Inprovements in Rollers for Drawing Mechanism for Fibrous llllaterial of which the following is a specification.

This case isa division of our application filed January 26, 1923, Serial No. 615,177.

This invention consists in improvements in the rollers ordinarily called selfweighted rollers which are made to bear with only their own weight on fibrous material in the for .1 of strands, slivers or rovings in drawing or drafting mechanisms of any kind in order, to press such fibrous material against rollers made to revolve or against other surfaces made to revolve or to travel and particularly relates to self weighted rollers for drawing or drafting mechanisms usedrto effecthigh drafting or great'extensions of fibrous material. V

The principal object of this invention is to obviate the defects experienced in the use of self weighted rollers in the methods hitherto customary in drawing or drafting mechanisms especially in cases in which the self weighted rollers are very light, through such rollers failing to be revolved with approximate regularity by friction against the fibrous material on which they are made to bear or the-rollers or surfaces with which they co-operate.

r, With this principal object, this invention consists in self weighted rollers formed of sleeves which are mounted freely around and ,eccentrically movable relatively to axles made to revolve in use for holding them in position and are connected to such axles by flexible tubular connecting 'means and so compelled constantly to. turn with the axles on which theyare mounted while bearing on fibrous. material bytheir own weight only or substantially by their own weight only and without or substantially without the axles imparting or transmitting pressure to them. Y

The accompanying drawing shows rollers forming illustrative embodiments of this invention. Figs. 1 3 and 5 are side elevations partly in longitudinal section and Figs. 2, 4 and 6 are transverse sections the lines numbered in correspondence with figures indicating the several planes on which sections are taken. The same numerals of reference indicate corresponding parts.

In the roller shown in Figs. 1 and 2, 7 is the axle formed with a central boss 71 and two cylindrical arbors or rods 72 extending from that boss 71. The axle 7 is provided with two sleeves 8 loose around the arbors 7 2 and free to move for a convenient distance eccentrically in relation to them. A tube 9 of leather-such asis ordinarilyu'sed for roller coverings is made to extend over and secured to both sleeves 8 and the boss 71 so as ordinarily to hold the sleeves 8 a little away from the boss 71 and is subjected as is preferable to pressure and friction in the parts 91 between the sleeves 8 and the boss 71 so as to be made more flexible or capable of yielding to allow the sleeves 8 to move eccentrically in relation to the axle 7.

The boss 71 is made of a diameter such that with the part of the tube 9 surrounding it, it will hold up the axle 7 by bearing upon the fluted roller or other surface with which the roller shown is to co-operate while the diameters of the arbors 72 and the external diameters of the sleeves 8 and the diameters of the longitudinal holes 81 through them are made such that the sleeves 8 can move so far eccentrically'in relation to the arbors 72 as to bear by only their own weight and that of the attached portions of the tube 9 on fibrous material on the fluted roller or other co-operating surface on which fibrous material is to be pressed and the arbors 72 are prevented by the boss 71 and attached portions of the tube 9 from applying pressure to the sleeves 8 and so serve practically only to keep the sleeves 8 in. position. The leather covering formed by the portion of the tube 9 surrounding the boss 71 bears on the fluted roller or other co-operating surface on which fibrous material is to be pressed and promotes or ensures the turning of the axle 7 by friction thereagainst and the tube 9 compels the sleeves 8 to turn with the axle 7 while bearing by only their own weight and that of the surrounding portions of the tube 9 on fibrous material or against the co-operatlng roller or surface and without or substantially the axle 7 imparting or transmitting pressure to them.

Two collars 10 of the same circumference as the portion of-the tube 9 surrounding the so that the roller can be revolved in guides similarly to ordinary top rollers of drawing or drafting mechanisms.

In Figs. 3 and 1 and axle 11 generally similar to that shown. in Figs. 1 and 2 with a central boss 111 from which extend cylindrical arbors 112 is provided with two sleeves 12 whichare applied around arbors 112 and made movable eccentrically relatively to them by having longitudinal holes 121 larger than the arbors 112 and are connected to the axle 11 by means of-short tubes or rings 13 of flexible leather, such as is ordinarily used for roller coverings, secured on short parts 113 and 122- of less diameter formed respectively at the ends of the boss 111 and at the adjacent ends of the sleeves 12. Friction and pressure are preterably applied to the tubes 13 as is indicated at 131 in the parts between the sleeves 12 and the boss 111 so that the tubes 13 will yield more easily in allowing the sleeves 12 to be moved eecentrically in relation to the axle 11. CollarslOl similar to the collars 10 and of diameter equal to that of the boss 111 are secured upon the, arbors 112.

In Figs. 5 and 6 extensions of tubular leather coverings 14 of sleeves. 15 intended to bear on fibrous material like the sleeves 8 mounted to be eccentrically movable about and havinglongitudinal holes 151 larger than the cylindrical arbors 162 extending from the central boss 161 of an axle 16 generally similar to that shown in Figs. 1 and 2, are secured to parts 163 of less diameter formed at the ends of the boss 161 and preferablythe leather is subjected to triction and pressure in the parts 141 between the sleeves l5. and the boss 161 so that it will yield more readily'in allowing the sleeves 15 to be moved eccentrically in relation. to the axle 16. Collars 102 similar to the collars 10 and 101 .and of diameter equal to that of the boss 161 aresecured on the arbors 162.

Tubes of flexible material may be applied in other ways-as the connexions between roller sleeves and axles for holding them in position and in difie'rent constructions the axles and roller sleeves may be of different materials and be formed and disposed in other ways, without departure from the spirit of this invention as embodied in the claims. following. 7 p 7 Thus the rolle sleeves may be of any formation and material appropriate to the ways, mechanisms or machines in which they are to be used, as for example they may be formed of metal, wood, vulcanite .or other material suitable and smooth, fluted or of other form or ma be formed of cores of metal, Wood or ot er material with cover ings of leather or other material appropriate and one sleeve or more may be provided around one axle.

Similarly the axles may be formed or furnished in any suitable way with bosses or driving parts for revolving the axles through bearing against or being made to engage with and so to be revolved by the rollers or surfaces made to travel against which the sleeves are to press fibrous material, or by parts provided on such rollers or surfaces. The bosses or driving parts provided on the axles for revolving them may be smooth or plain or fluted or roughened or covered with leather or adapted in any other way for bearing against or engaging with and receiving motion from fluted rollers-or oth r surfaces a ainst which fibrous material is to be pressed by the sleeves of the rollers. The weight of the axles and bosses or driving parts may be made to serve alone for causing the bosses or driving parts to bear against 0r engage with the rollers or surfaces made to travel such an axle being called a self weighted axle or the axles may be weighted ormade subject to spring pressure in any way convenient as for example by weights or springs applied to bear on the axles 1n the parts between sleeves in the cases shown in Figs. 3 and 4 and Figs. 5 and 6 so that their revolution may be promoted or ensured while they will have no or approximately no part in pressing th e sleeves against the fibrous material and the fibrous material against the rollers or surfaces against which it is to be pressed.

The tubes or coverings 9and 14: and tubes 18 besides compelling the. sleeves and axles with which they are respectively usedto turn together-fulfil also .the function of resisting movement-.of'the sleeves from the co-operating rollers or surfaces with which they are used and counteracting the ten dency of the inertia'of the sleeves to delay or hinder the return of the sleeves to proper.

bearing on the fibrous material against the co-operating rollers or surfaces. and to interfere with the equable bearing of the sleeves on such fibrous material."

The tubes or coverings 9 or 14; and tubes 13 also exclude fiy or fluff from entry between the bosses and the sleeves connected with them. Therollers shown are simple and advantageous .in construction and application. I

' Rollers comprising ec'centrically movable sleeves mounted around and made to turn with axles according to this invention may be employed to co-operate with any kind or form of rollers or other surfaces in any forms of drawing or drafting mechanism and may be used as the only means for pressing fibrous material against the rollers or surfaces with which they co-operate or may be used in pressing fibrous material against rollers Or surfaces with which other co-opcrating pressing rollers or devices are used.

\Vhat we do claim as our invention and desire to secure by Letters Patent is:

1. In a self weighted roller for a drawing mechanism as hereinbefore indicated, a revoluble axle having means for bearing against and being revolved by a moving part with which the roller is to cooperate and so supporting and bringing about the revolution of the axle, a sleeve mounted around and eccentrically movable relatively to the axle for bearing on fibrous material and tubular flexible connecting means in connexion with the sleeves and the axle.

2. In a self weighted roller for a drawing mechanism as hereinbefore indicated a revoluble axle having means for hearing against and being revolved by a moving part with which the roller is to co-operate and so supporting and bringing about the revolution of the axle, sleeves mounted around and eccentrically movable relatively to the axle for hearing on fibrous material and tubular flexible connecting means in connexion with the sleeves and the axle.

3. In a self weighted roller for a drawing mechanism as herein-before indicated a self weighted revoluble axle having means for bearing against and being revolved by a moving part with which the roller is to cooperate and s0 supporting and bringing about the revolution of the axle, a sleeve mounted around and eccentrically movable relatively to the axle for bearing on fibrous material and tubular flexible connecting means in connexion with the sleeves and the axle.

4:. In a self weighted roller for a drawing mechanism as hereinbefore indicated a self weighted revoluble axle having means for bearing against and being revolved by a moving part with Which the roller is to cooperate and so supporting and bringing about the revolution of the axle, sleeves mounted around and eccentrically movable relatively to the axle for hearing on fibrous material and tubular flexible connecting means in connexion with the sleeves and the axle.

In testimony, that we claim the foregoing as our invention, we have signed our names this nineteenth day of June, 1923.

ROBERT COTTAM. THOMAS SEFTON. JAMES EDWARD LEES, 

